/**
 * @file Incremental newline-delimited JSON line splitting. One line-boundary
 *   implementation shared by every NDJSON reader in the SDK — the buffered
 *   batch-PURL generator and the pull-driven patch stream both drive the same
 *   splitter, so the boundary rules cannot drift between them.
 */
/**
 * Stateful newline splitter. `push` returns the complete lines a chunk
 * finished, holding any trailing partial line until the next chunk completes
 * it; `flush` releases that partial line once the source ends. Blank lines are
 * dropped — an NDJSON record is one JSON value per line.
 */
export interface NdjsonLineSplitter {
    flush(): string[];
    push(chunk: string): string[];
}
/**
 * Build a splitter that turns arbitrary chunk boundaries into whole NDJSON
 * lines.
 */
export declare function createNdjsonLineSplitter(): NdjsonLineSplitter;
/**
 * Yield NDJSON lines from a chunk source, one line at a time. The generator
 * suspends between lines, so a slow consumer pauses the underlying stream
 * instead of letting the whole body accumulate. UTF-8 sequences split across a
 * chunk boundary are stitched back together by the streaming decoder.
 *
 * @param source - Async or sync chunk source, e.g. an `IncomingMessage`.
 */
export declare function iterateNdjsonLines(source: AsyncIterable<Uint8Array | string> | Iterable<Uint8Array | string>): AsyncGenerator<string>;
/**
 * Yield NDJSON lines from a resident string. Use this only when the whole body
 * is already in memory; prefer `iterateNdjsonLines` over a response stream.
 */
export declare function readNdjsonLines(text: string): Generator<string>;